Attachment-plug receptacle



Jan. 7, 1930. E. G. GA'YNOR 1,742,907

ATTACHMENT PLUG RECEPTACLE Filed July 9, 1927 will I I gwuentoz Z16.Hay/a0 Patented Jan. 7, 1930 UNITED STATES EDWITJ G. GAYNOR, OFBRIDGEPORT, CONNECTICUT ATTACHMENT-PLUG RECEPTACLE Application filedJuly 9, 1927. Serial No. 204,558.

My invention relates to improvements in attachment plug receptacles.

The chief object of my invention is to provide an improved attachmentplug receptacle, which can be manufactured and assembled moreeconomically and efficiently than those heretofore made. Another objectof my invention is to provide such a receptacle Further objects, andobjects relating to details and economies of manufacture andconstruction, will definitely appear from the detailed description tofollow. In one instance, I accomplish the objects of my invention by thedevices and means described in the accompanying specification. Myinvention is clearly defined and pointed out in the appended claim.Oneembodiment of my invention is illustrated in the accompanyingdrawing, forming a part of this specification, in which:

Figure 1 is a top plan view of a receptacle embodying my invention.

Fig. 2 is a view of that receptacle in side elevation.

Fig. 3 is a bottom plan view of the receptacle, with the sheet ofinsulation and the receptacle-supporting yoke removed.

' Fig. lis a perspective view of one of the contact members, and Fig. 5is an enlarged, sectional view through the receptacle, taken on the line5-5 of Fig. 1.

In the drawing, the same reference numerals refer to the same partsthroughout the several views and the sectional View is taken lookin inthe direction of the arrows at the ends 0 the section line.

I have illustrated a receptacle comprising a body 10 formed ofinsulating material and recessed from its lower face to provide thechambers 11 in which the contacts are housed. The upper face of thereceptacle body is sub stantially concave, the outer edge thereof beingraised, as at 12, and the face being pierced, at 14, at substantiallythe lowest points of the concave face, to provide blade guidewaysleading to the chambers 11, within which the (:0 contacts are housed.The upper face of the body is provided with a central projection 15,located between the blade guideways 14:, and having a central bore 16therein, from which leads a passage 17 of smaller diameter receiving atubular rivet19, the head 18 of which is positioned in the bore 16. Oneside wall of each of the chambers llhas a slot 25 extendingtherethrough, and'the two slots 25 are located in opposite side walls ofthe body, as shown in Fig. 3. The blade guideways 14 are slightly offsetfrom the inner side walls of the chambers 11, so as to form theoverhanging shoulders 20, as seen in Fig. 5. r

A contact is arranged in each of the chambers 11. Each contact comprisesa strip 21, located in the corresponding slot 25, and having, at oneend, a contact portion 22 extending downwardly from the strip 21, bentlaterso ally at 23 to form the base of the contact, and then bentupwardly and toward the portion 22 to form the contact finger 24, sothat these portions form opposed contact fingers housed within thechamber 11 of the receptacle. Upon the other end of the contact strip21, a flange 27 is formed constituting a terminal flange and providedwith a tapped hole 28 to receive a terminal screw. The lower sideportions of the receptacle body are cut away on either side of thecentral part, so as to form the shoulders 26, one on each side of thereceptacle body, which shoulders are located with one edge in line withthe corresponding slot 25. The contacts are located in the chambers 11with the base portion 23 of each contact substantially in line with thelower face of the receptacle body, the strip portion 21 located in thecorresponding slot 25, and the terminal flange 27 engaging 10c the lowersurface of the corres )onding terminal shoulder 26. That shoul er isprovided ally with a recess 30 to receive the projecting end of theterminal screw 29. The upper end of the portion 22 of the contact iscurved latersomewhat, as at 38, and engages the shoulder 20 in thechamber 11, which serves as a stop to limit the upward movement of thecontact within the chamber.

When the contactshave been inserted in the chambers 11, a sheet 31 ofinsulation is applied to the lower face of the receptacle body alidcloses the lower ends of the chamway 17 ,proj e'cts through this sheet 0insulation and is upset or spun over it, so as to secure it in positionand thus support the contacts in housed position in the chambers 11. Areceptacle-supporting yoke 33 is provided which underlies the sheet ofinsulation 31 and is provided with laterally-extending arms 34, by whichthe receptacle may be mounted in position in the manner well understoodin this A central hole 35 is provided in the base assembly thereof, thatis, without disturbing the means which support the contacts in housedposition within the receptacle body.

Both the body of insulating material and the contacts are of such formthat the can be manufactured very cheaply and elficiently and theirassembly is a comparatively simple matter so that the resultingreceptacle is one which can be manufactured ata cost less than thoseheretofore on the market. Furthermore, the construction of the upperfaceof this receptacle is such as to guide the blades of the attachmentplug into the proper position for insertion in the blade guideways andthis facilitates the use of the receptacle.

I ,am aware that the construction illustrated may be-varied considerablywithout departing from the spirit of my invention and, therefore, I amnot to be restricted to the specific construction shown except asrequired by the appended claim.

What I claim is:

An attachment plug receptacle comprising a body of insulating materialrecessed from its lower face to provide contact receiving chambers andpierced from its upper face to form guideways leading to said chambers,

said body having a central passage extending transverselytherethroughand of greater diameter at its upper end than at its lower, contactspositioned in said chambers, a sheet of insulating material applied tothe lower face of said body, and a rivet in said central passageprojecting through said sheet and upset to secure the latter to the bodyand a receptacle supporting yoke underlyin said sheet and provided withan opening of arger area than the upset portion of said rivet for.reception of said portion of the rivet.

. ED. G. GAYNOR.

bers'll. The tubular rivet 19, in the assaget will be ob-

